A dilatometer test was conducted in a sand deposit ata depth of 6 m. The groundwater table was located at a depth of 2 m below the ground surface. Given, for the sand: 3.29 - 14.5 kN/m3 and Yat 19.8 kN/m3. The contact stress during the test was 260 kN/m2. Estimate the soil friction angle, ф".

Y

Two similar clay soil samples were pre-consolidated in triaxial equipment with a chamber pressure of 600 kN/m². Consolidated-drained triaxial tests were conducted on these two specimens. The following are the results of the tests: Specimen 1: Specimen 2: kN 0; = 100 m2 kN 0; = 50 m? (Ao,),= kN 410.6- ,kN (Ao.), = 384.37- m Shear stress KN/m? Normal stress 50 100 434.37 510.6 kN/m2 Find the values of the cohesion e and the angle of internal friction p.

A saturated clay sample is tested using unconsolidated undrained test with confining pressure equal to 90 kPa and the added axial stress is 150 kPa. Determine the cohesion of soil. Note: For saturated clay under UU test the angle of internal friction is zero